With the recent release of SQL Developer 4.0.1 there has been some very minor bug fixes for Oracle Data Miner. But there has been one particular enhancement that I wanted to have a look at. This blog post will look at this new feature and how you can use it too. In the previously released version of the Oracle Data Miner tool we had a Graph Node. This is really a new feature that came with SQL Developer 4 and was available in the Early Adopter releases since July 2013. During the Early Adopter releases and with the official release of SQL Dev 4, the Line Graph feature of the Graph Node only allowed you to have one line drawn i.e. for a single Y attribute. Now in SQL Dev/ODM 4.0.1 the Graph Node has been updated to allow you to have multiple Line Graphs that are stacked. To illustrate this we will need to define what data source we are going to use and to create a shell of a Graph Node in Oracle Data Miner. The following diagram illustrates this. In this example I’m using the CARS data set that is available on OTN.

When you have these nodes created you are now ready to create your graphs. To do this double click on the Graph Node. You can now set the attribute to use for the X-axis, in my example this will be MODEL_YEAR. Then for the Y-Axis select the attributes you want to include in the stacked graph by holding down the control key as you select each attribute

You are now ready to create the graph. To do this click on the OK button and you will have your stacked line graph.